Chemistry: molecular biology and microbiology – Measuring or testing process involving enzymes or... – Involving viable micro-organism
Patent
1991-04-19
1993-11-23
Lilling, Herbert J.
Chemistry: molecular biology and microbiology
Measuring or testing process involving enzymes or...
Involving viable micro-organism
210603, 210613, 435167, 435170, 435262, 435807, C12Q 102
Patent
active
052643492
ABSTRACT:
Method for determining in an accelerated manner the biodegradability of at least one product under anaerobic conditions which are similar to those in a dump, characterized in that a mixture with a dry substance content of between 25 and 50% is prepared with more than 80 weight-% of an active anaerobic inoculum and less than 20 weight-% of the product, on the one hand, at least one quantity of this mixture and, on the other hand, at least one quantity of the inoculum is subjected in the same manner to a fermentation at a temperature of between 30 and 60 degrees Centigrade in anaerobic conditions, the amount of biogas that is released with both these fermentations is separately measured or calculated, starting with these amounts the amount of biogas produced by the product alone is deduced and starting with the latter amount the degradability of the product itself is determined, this is the amount of carbon which was degraded from the product and converted into CO.sub.2 and CH.sub.4.
REFERENCES:
patent: 4062770 (1977-12-01), Kneer
patent: 4684468 (1987-08-01), De Baere
Nakasaki, et al, "Change In Microbial Numbers During Thermophilic Composting Of Sewage Sludge With Reference To CO.sub.2 Evolution Rate", App. and Envir. Microbio., 49(1):37-41 (1985).
Lilling Herbert J.
Organic Waste Systems, naamloze vennootschap
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